BROWNELLS BRN-180 SCNR 223 WYLDE 13.9" COMPLETE UPPER RECEIVER ASSEMBLY The 13.9" upper receiver now comes with a standard A2 flash hider. This allows you to install the muzzle device of your choice to fit your suppressor. All NFA rules apply. BRN-180 SCNR - A NEW GENERATION WITH THE UPGRADES YOU ASKED FOR "The difference is in the details," goes an old saying. It certainly proves true with the Third Generation of our BRN-180 upper receiver. This redesign incorporates a whole series of detail changes based in large part on feedback received from BRN-180 users, and on our own experience putting myriad thousands of rounds through 180s at our test range. W Mfg: Brownells